Results 11 to 20 of about 159,545 (358)
On the Leibniz bracket, the Schouten bracket and the Laplacian [PDF]
Journal of Mathematical Physics, 2004 The Leibniz bracket of an operator on a (graded) algebra is defined and some of its properties are studied. A basic theorem relating the Leibniz bracket of the commutator of two operators to the Leibniz bracket of them is obtained. Under some natural conditions, the Leibniz bracket gives rise to a (graded) Lie algebra structure.
Coll, Bartolomé, Ferrando, Joan Josep
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Courant bracket found out to be T-dual to Roytenberg bracket [PDF]
The European Physical Journal C, 2020 AbstractBosonic string moving in coordinate dependent background fields is considered. We calculate the generalized currents Poisson bracket algebra and find that it gives rise to the Courant bracket, twisted by a 2-form $$2B_{\mu \nu }$$2Bμν. Furthermore, we consider the T-dual generalized currents and obtain their Poisson bracket algebra.
Ivanišević, I. +2 more
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On the Quantization of Poisson Brackets [PDF]
Advances in Mathematics, 1997 In this paper we introduce two classes of Poisson brackets on algebras (or on sheaves of algebras). We call them locally free and nonsingular Poisson brackets. Using the Fedosov's method we prove that any locally free nonsingular Poisson bracket can be quantized.
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Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Background and purpose For postoperative breast cancer patients, deformable image registration (DIR) is challenged due to the large deformations and non‐correspondence caused by tumor resection and clip insertion. To deal with it, three metrics (fiducial‐, region‐, and intensity‐based) were jointly used in DIR algorithm for improved accuracy ...
Xin Xie +6 more
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Volume staging for arteriovenous malformation SRS treatment using VMAT
Journal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022 Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
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The relationship between light curing time, shear bond strength (SBS) and remanence index of adhesive (ARI) [PDF]
Romanian Journal of Stomatology, 2022 The objective of this study is to investigate the effect of different light curing times on the shear strength and remanence index of the adhesive. The light curing intensity was presented by Woodpecker LED light curing unit (2500 mw/cm2).
Mahmoud El Saafin +5 more
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Applied Sciences, 2023 This study aimed to evaluate the failure rates and relevant factors of bonded orthodontic brackets with a computer-aided design and manufacturing (CAD/CAM)-based 3D-printed indirect bonding jig system (IDBS) using 2531 natural teeth selected from 99 ...
Jin Bai, Hye-Jin Lee, Seong-Hun Kim
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Effect of Remineralizing Agents on Shear Bond Strength of Orthodontic Brackets—In Vitro Study
Children, 2023 Orthodontic treatment can be effective only with the proper adhesion strength of the bonded elements on the teeth. The aim of the study was to analyze the influence of different remineralization products on the brackets (Evolve Low Profile Brackets 0.022
Alexandrina Muntean +4 more
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The Sklyanin bracket and cluster adjacency at all multiplicity [PDF]
Journal of High Energy Physics, 2019 A bstractWe argue that the Sklyanin Poisson bracket on Gr(4, n) can be used to efficiently test whether an amplitude in planar N$$ \mathcal{N} $$ = 4 supersymmetric Yang-Mills theory satisfies cluster adjacency.
J. Golden +3 more
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Weakly nonlocal Poisson brackets, Schouten brackets and supermanifolds [PDF]
Journal of Geometry and Physics, 2020 Poisson brackets between conserved quantities are a fundamental tool in the theory of integrable systems. The subclass of weakly nonlocal Poisson brackets occurs in many significant integrable systems. Proving that a weakly nonlocal differential operator defines a Poisson bracket can be challenging.
Lorenzoni P., Vitolo R.
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